Trump has reacted sharply to the investigation. This includes tax and insurance fraud and falsification of business records.
Just last week, New York Attorney General Letitia James (D) announced that she and Vance joined forces in investigating Trump's company criminally.
A spokesperson for the former president did not immediately return a request for comment.
The WashingtonPost reports the grand jury panel has already convened and is anticipated to sit three days a week for six months. "No other President in history has had to put up with what I have had to, and on top of all that, I have done a great job for our Country, whether it's taxes, regulations, our Military, Veterans, Space Force, our Borders, speedy creation of a great vaccine (said to be a miracle!), and protecting the Second Amendment". He alleged that the probe "is purely political" and is "being driven by highly partisan Democrat prosecutors".
Investigators suspect the Trump Organization may have artificially inflated and reduced the value of assets, particularly several properties in NY state, to either get bank loans or reduce their taxes.
Vance declined to run for reelection and will leave office at the end of the year, meaning the Trump case is likely to pass to his successor in some form.
Cyrus Vance Jr, Manhattan district attorney, has been conducting an investigation into Trump's malpractices. An election next month is all but certain to determine who that will be.
In February, the US Supreme Court upheld Vence's investigation by clarifying how prosecutors would execute and obtain subpoenas at Trump's accounting firm.
Melbourne COVID outbreak sends a chill through Australian leagues
The ministry said it was "actively monitoring" the situation but was not recommending closing NZ's travel bubble with Victoria. Private gatherings in greater Melbourne will be limited to five people while public gatherings will be limited to 30.
The documents are protected by grand jury secrecy rules and are not expected to be made public.
She gave investigators a series of tax records and other documents when investigating whether some Trump employees were given off-book compensation such as apartment and school tuition.
The Trump Organization's longtime chief financial officer Allen Weisselberg has been named in multiple reports as a pressure point, eyed by Manhattan prosecutors as someone who could potentially cooperate against the former president.
Allen Weisselberg was subpoenaed in James' civil investigation and testified twice past year.
On Tuesday, ABC News reported that potential witnesses have recently been contacted about appearing before the grand jury.
Mr. Trump, who resigned in January, denied cheating.
This is a developing story.